"DrawCond"

stepmania/src/BGAnimationLayer.cpp

@@ -540,6 +540,8 @@ void BGAnimationLayer::LoadFromIni( CString sAniDir, CString sLayer )
 	ini.GetValue( sLayer, "Lighting", m_bLighting );
 	ini.GetValue( sLayer, "TexCoordVelocityX", m_fTexCoordVelocityX );
 	ini.GetValue( sLayer, "TexCoordVelocityY", m_fTexCoordVelocityY );
+	ini.GetValue( sLayer, "DrawCond", m_sDrawCond );
+
 	// compat:
 	ini.GetValue( sLayer, "StretchTexCoordVelocityX", m_fTexCoordVelocityX );
 	ini.GetValue( sLayer, "StretchTexCoordVelocityY", m_fTexCoordVelocityY );
@@ -935,6 +937,17 @@ void BGAnimationLayer::Update( float fDeltaTime )
 	}
 }
 
+bool BGAnimationLayer::EarlyAbortDraw()
+{
+	if( m_sDrawCond.empty() )
+		return false;
+
+	if( !Lua::RunExpression( m_sDrawCond ) )
+		return true;
+
+	return false;
+}
+
 void BGAnimationLayer::DrawPrimitives()
 {
 	if( m_fFOV != -1 )

stepmania/src/BGAnimationLayer.h

@@ -32,6 +32,7 @@ public:
 
 	void Update( float fDeltaTime );
 	void DrawPrimitives();
+	bool EarlyAbortDraw();
 
 	float GetMaxTweenTimeLeft() const;
 	void GainingFocus( float fRate, bool bRewindMovie, bool bLoop );
@@ -96,6 +97,8 @@ protected:
 	float m_fFOV;	// -1 = no change
 	bool m_bLighting;
 
+	CString m_sDrawCond;
+
 	// stretch stuff
 	float m_fTexCoordVelocityX;
 	float m_fTexCoordVelocityY;